angular resolution

简明释义

角分辨力

英英释义

例句

1.Improving the angular resolution of our cameras can significantly enhance image quality.

提高我们相机的角分辨率可以显著提升图像质量。

2.The angular resolution of this microscope is sufficient to view individual cells.

这个显微镜的角分辨率足以观察单个细胞。

3.The telescope's angular resolution allows astronomers to distinguish between closely spaced stars.

这个望远镜的角分辨率使天文学家能够区分紧密相邻的恒星。

4.In radio astronomy, angular resolution is crucial for observing distant galaxies.

在射电天文学中，角分辨率对于观察遥远的星系至关重要。

5.Higher angular resolution in satellite imagery can help in urban planning.

卫星图像中的更高角分辨率可以帮助城市规划。

作文

In the field of astronomy, the term angular resolution refers to the ability of a telescope to distinguish between two closely spaced objects in the sky. The higher the angular resolution, the finer the details that can be observed. This concept is crucial for astronomers as it determines how clearly they can see celestial bodies such as stars, planets, and galaxies. For instance, when two stars are very close together, a telescope with a low angular resolution may not be able to tell them apart, while one with a high angular resolution can resolve them into individual points of light.The importance of angular resolution extends beyond just the observation of stars. It plays a significant role in various fields, including satellite imaging, microscopy, and even in everyday photography. In satellite imaging, a high angular resolution allows for clearer images of the Earth's surface, which is essential for mapping and monitoring environmental changes. Similarly, in microscopy, scientists rely on high angular resolution to observe the intricate details of tiny organisms and cells, leading to advancements in biological research.To understand how angular resolution is measured, one must consider the Rayleigh criterion, which states that two point sources are considered resolvable if the central maximum of one diffraction pattern coincides with the first minimum of another. This criterion provides a mathematical framework for determining the limits of angular resolution based on the wavelength of light and the diameter of the aperture of the observing instrument. The formula for calculating angular resolution is given by: θ = 1.22 * (λ / D) Where θ is the angular resolution in radians, λ is the wavelength of light, and D is the diameter of the aperture. As can be seen from this formula, increasing the diameter of the telescope's aperture will improve its angular resolution, allowing astronomers to see finer details in their observations.Technological advancements have significantly enhanced the angular resolution of telescopes over the years. For example, the introduction of adaptive optics has allowed ground-based telescopes to correct for atmospheric distortion, effectively increasing their angular resolution. Space telescopes, like the Hubble Space Telescope, benefit from being above the Earth's atmosphere, thus achieving much higher angular resolution than ground-based telescopes.In conclusion, angular resolution is a fundamental concept in observational science, particularly in astronomy, where it dictates the clarity and detail of celestial observations. Its implications reach far beyond astronomy, impacting various scientific disciplines and technologies. Understanding and improving angular resolution continues to be a priority for researchers and engineers alike, as clearer images lead to greater discoveries and insights about our universe and the world around us.

在天文学领域，术语角分辨率指的是望远镜区分天空中两个相距较近的物体的能力。角分辨率越高，观察到的细节就越精细。这个概念对天文学家至关重要，因为它决定了他们能多清晰地看到天体，例如星星、行星和星系。例如，当两颗星星非常接近时，具有低角分辨率的望远镜可能无法将它们区分开来，而具有高角分辨率的望远镜则可以将它们解析为单独的光点。角分辨率的重要性不仅限于观察星星。它在多个领域中发挥着重要作用，包括卫星成像、显微镜学，甚至日常摄影。在卫星成像中，高角分辨率允许更清晰的地球表面图像，这对于制图和监测环境变化至关重要。同样，在显微镜学中，科学家依赖于高角分辨率观察微小生物和细胞的复杂细节，从而推动生物研究的进展。要理解如何测量角分辨率，必须考虑瑞利准则，该准则指出，当两个点源的衍射图案的中心最大值与另一个的第一个最小值重合时，它们被认为是可分辨的。该准则提供了一个数学框架，用于根据光的波长和观察仪器的孔径直径确定角分辨率的限制。计算角分辨率的公式为：θ = 1.22 * (λ / D)其中θ是以弧度表示的角分辨率，λ是光的波长，D是孔径的直径。从这个公式可以看出，增加望远镜孔径的直径将改善其角分辨率，使天文学家能够在观察中看到更精细的细节。技术进步大大增强了望远镜的角分辨率。例如，自适应光学的引入使得地面望远镜能够校正大气扭曲，有效地提高了它们的角分辨率。太空望远镜，如哈勃太空望远镜，由于位于地球大气层之上，因此比地面望远镜获得更高的角分辨率。总之，角分辨率是观测科学中的一个基本概念，特别是在天文学中，它决定了天体观测的清晰度和细节。它的影响远超天文学，影响着多个科学学科和技术。理解和提高角分辨率仍然是研究人员和工程师的优先事项，因为更清晰的图像带来了对我们宇宙和周围世界更大的发现和洞察。